Cosmetic Refill Asymmetric Recognition Mechanism

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Solution Overview

Problem

Existing cosmetic product refills and receptacles lack a reliable mechanism for ensuring correct compatibility, leading to potential malfunction and damage when the wrong refill is inserted into the base, which complicates design and manufacturing while risking deterioration of the mechanism.

Innovation Solution

A refill design featuring at least two recognition elements forming a predefined identification pattern that uniquely aligns with corresponding elements on the actuation base, allowing only correct association and activation of the refill, preventing incorrect assembly and ensuring proper operation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If interchangeable refills are designed for cosmetic receptacles, then the receptacle can be refilled multiple times and aesthetic parts can be retained, but there is no mechanism to ensure correct compatibility between refill and base

Engineering Contradiction:

ImproverefillabilityVSAvoidcompatibility assurance

Core Design Contradiction:

Adaptability or versatilityVSReliability

Solution Approach 1:

The patent applies asymmetry by providing refills with non-circular cross-sections (oval, triangular, or with asymmetric protrusions) that correspond to matching asymmetric recesses in the base. This asymmetric geometry ensures that only compatible refills can be inserted into the correct base, preventing incompatible combinations while maintaining ease of refillability.

Inventive Principle:

Principle #4Asymmetry

Solution Approach 2:

The patent introduces recognition elements (protrusions, recesses, or coded patterns) as intermediary features on both the refill and base that mediate the compatibility verification. These intermediary elements engage with each other during insertion to confirm proper matching before the cosmetic product can be accessed, thus ensuring reliability without compromising the interchangeable nature of the system.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Reliability

If recognition elements are added to ensure correct assembly, then compatibility is ensured, but the device complexity increases

Engineering Contradiction:

Improvecompatibility assuranceVSAvoidstructure complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent merges the recognition elements with the existing structural components of the refill and base. The protrusions and recesses are integrated into the cosmetic product container and base body rather than being separate additional parts. This combining approach ensures compatibility verification without significantly increasing device complexity, as the recognition features are formed as part of the manufacturing process rather than added as separate components.

Inventive Principle:

Principle #5Merging (Combining)

Data Source

PatentEP3888489B1Container for a cosmetic product and refill for such a container

Publication Date: 2023.12.27 ALBEA SERVICES SAS

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AI summary

The invention proposes a refill (18) intended to be removably mounted on an actuation base (16) and configured to receive a cosmetic product, said refill (18) comprising: - optionally at least one rotation-locking means designed to link the refill (18) and the base (16) in rotation, and - at least one recognition element, referred to as the first recognition element (40), arranged to form a predefined identification pattern (42) configured to cooperate with an identification means of the actuation base (16) so as to allow the refill (18) to be mounted on the actuation base (16) and to allow the cosmetic product to enter and/or exit.